diff --git a/pkg/eth/backend.go b/pkg/eth/backend.go
index a8b4bda8..5cc1f878 100644
--- a/pkg/eth/backend.go
+++ b/pkg/eth/backend.go
@@ -59,7 +59,6 @@ var (
 
 	// errMissingSignature is returned if a block's extra-data section doesn't seem
 	// to contain a 65 byte secp256k1 signature.
-	errMissingSignature = errors.New("extra-data 65 byte signature suffix missing")
 )
 
 const (
diff --git a/pkg/shared/test_helpers.go b/pkg/shared/test_helpers.go
index d9795b59..f8d32dbf 100644
--- a/pkg/shared/test_helpers.go
+++ b/pkg/shared/test_helpers.go
@@ -58,8 +58,12 @@ func SetupDB() *sqlx.DB {
 func TearDownDB(db *sqlx.DB) {
 	tx, err := db.Beginx()
 	Expect(err).NotTo(HaveOccurred())
+	_, err = tx.Exec(`DELETE FROM nodes`)
+	Expect(err).NotTo(HaveOccurred())
 	_, err = tx.Exec(`DELETE FROM eth.header_cids`)
 	Expect(err).NotTo(HaveOccurred())
+	_, err = tx.Exec(`DELETE FROM eth.uncle_cids`)
+	Expect(err).NotTo(HaveOccurred())
 	_, err = tx.Exec(`DELETE FROM eth.transaction_cids`)
 	Expect(err).NotTo(HaveOccurred())
 	_, err = tx.Exec(`DELETE FROM eth.receipt_cids`)
@@ -68,6 +72,10 @@ func TearDownDB(db *sqlx.DB) {
 	Expect(err).NotTo(HaveOccurred())
 	_, err = tx.Exec(`DELETE FROM eth.storage_cids`)
 	Expect(err).NotTo(HaveOccurred())
+	_, err = tx.Exec(`DELETE FROM eth.state_accounts`)
+	Expect(err).NotTo(HaveOccurred())
+	_, err = tx.Exec(`DELETE FROM eth.access_list_elements`)
+	Expect(err).NotTo(HaveOccurred())
 	_, err = tx.Exec(`DELETE FROM blocks`)
 	Expect(err).NotTo(HaveOccurred())
 	_, err = tx.Exec(`DELETE FROM eth.log_cids`)